48% correct, 98% educated guesses

70% Reef Chemist
Question 33 is a typo, mixing up alk with nitrate

48%

I actualy knew all the ones I got correct.. The rest I guessed and guessed completely wrong. :) so.. it was accurate in my case.

38% with a lot of guesses and a bit of a background in chemistry (chem is my least favourite science). For a guy who started marine last month, im pretty proud of myself.